package com.dily.study.demo.thread;

/**
 * Date: 2022-08-10 星期三
 * Time: 11:23
 * Author: Dily_Su
 * Remark: 模拟死锁
 */
public class DeadLock {

    public static void main(String[] args) {
        MakeUp g1 = new MakeUp(0,"白雪公主");
        MakeUp g2 = new MakeUp(1,"灰姑娘");
        g1.start();
        g2.start();
    }

}

// 口红
class Lipstick{

}

// 镜子
class Mirror{

}

class MakeUp extends Thread{
    static Lipstick lipstick = new Lipstick();
    static Mirror mirror = new Mirror();

    int choice;
    String girlName;

    public MakeUp(int choice, String girlName) {
        this.choice = choice;
        this.girlName = girlName;
    }

    @Override
    public void run() {
        // 化妆
        try {
            markUp();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    /**
     *  死锁
     *  化妆
     *  互相持有对方的锁,互相需要拿到对方的锁
     *
     */
    private  void markUp() throws InterruptedException {
        if (choice == 0){
            synchronized (lipstick){
                System.out.println(this.girlName + "获得口红的锁");
                Thread.sleep(1000);
                synchronized (mirror){
                    System.out.println(this.girlName + "获得镜子的锁");
                }
            }

        }else {
            synchronized (mirror){
                System.out.println(this.girlName + "获得镜子的锁");
                Thread.sleep(2000);
                synchronized (lipstick){
                    System.out.println(this.girlName + "获得口红的锁");
                }
            }
        }
    }

    /**
     * 避免死锁
     */
    private  void markUp1() throws InterruptedException {
        if (choice == 0){
            synchronized (lipstick){
                System.out.println(this.girlName + "获得口红的锁");
                Thread.sleep(1000);
            }
            synchronized (mirror){
                System.out.println(this.girlName + "获得镜子的锁");
            }

        }else {
            synchronized (mirror){
                System.out.println(this.girlName + "获得镜子的锁");
                Thread.sleep(2000);
            }
            synchronized (lipstick){
                System.out.println(this.girlName + "获得口红的锁");
            }
        }
    }

}